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Accommodative changes after SMILE for moderate to high myopia correction.

Ke Zheng1, Tian Han1, Xingtao Zhou2

  • 1Key Lab of Myopia, Ministry of Health, Department of Ophthalmology, Eye & ENT Hospital of Fudan University, 19 Baoqing Road, Shanghai, 200031, China.

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|October 8, 2016
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Summary

Femtosecond laser small incision lenticule extraction (SMILE) surgery for myopia may decrease accommodative lag. This reduction in accommodative lag after SMILE may help relieve visual discomfort symptoms.

Keywords:
Accommodative lagAccommodative responseSmall incision lenticule extraction (SMILE)Visual discomfort symptom

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Area of Science:

  • Ophthalmology
  • Refractive Surgery
  • Visual Optics

Background:

  • Investigating changes in accommodative response and lag after femtosecond laser small incision lenticule extraction (SMILE).
  • SMILE is a refractive surgery technique for moderate to high myopia correction.

Purpose of the Study:

  • To evaluate the impact of SMILE on accommodative response and accommodative lag.
  • To determine if SMILE surgery influences the eye's ability to focus.

Main Methods:

  • Prospective study of 32 eyes undergoing SMILE for myopia.
  • Accommodative response measured using an open-field autorefractor at various stimulus levels pre- and post-surgery.
  • Data analyzed using multiple linear regression.

Main Results:

  • Significant differences in accommodative responses were observed pre- and post-SMILE (P < 0.001).
  • Preoperative refractive error and accommodative lag significantly impacted postoperative accommodative lag (P=0.006 and P=0.04, respectively).

Conclusions:

  • This study reports the first findings on accommodative changes post-SMILE.
  • A decrease in accommodative lag was observed after SMILE, potentially alleviating visual discomfort.